CN101746410A - Valve pocket of hydraulic steering gear - Google Patents
Valve pocket of hydraulic steering gear Download PDFInfo
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- CN101746410A CN101746410A CN201010101823A CN201010101823A CN101746410A CN 101746410 A CN101746410 A CN 101746410A CN 201010101823 A CN201010101823 A CN 201010101823A CN 201010101823 A CN201010101823 A CN 201010101823A CN 101746410 A CN101746410 A CN 101746410A
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- valve pocket
- hydraulic
- channel groove
- steering gear
- hydraulic channel
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Abstract
The invention discloses a valve pocket of a hydraulic steering gear, which comprises a cylindrical valve pocket main body with a through hole at the center; the interior of the valve pocket takes the shape of a stepped through hole; 6 or 8 straight hydraulic channel slots are arranged on the surface of the inner wall of the valve pocket main body; and the stepped end face at the right end of each hydraulic channel slot is provided with a circular sealing ring which is tightly riveted on the stepped end face by means of interference fit. In addition, 3 or 4 communicated slots communicated with the valve pocket can be arranged between the 6 or 8 channel slots of the valve pocket, and the communicated slots are evenly circumferentially distributed in 360 degrees, i.e. the interval between two adjacent channel slots is 120 degrees or 90 degrees. The structure of the hydraulic channel slots inside the valve pocket is changed and the valve pocket can be manufactured through extrusion, so the production efficiency can be substantially improved, the material and the production cost can be reduced, and the outer diameter of the rotary valve pack is reduced as a whole, thereby reaching the purposes of further reducing the cost and saving the mounting room of the steering gear.
Description
Technical field
The present invention relates to the power-assisted of automobile or the accessory field of power operated steering hardware, relating in particular to a kind of accessory of using as the fluid-link steering machine-with the structure type of used valve is the valve pocket that turns to of characteristics.
Background technology
The steering box formal name used at school is deflector, and it is most important parts in the automobile steering system.Its effect is: by a certain Transmission in steering transmission linkage or the deflector being applied the hydraulic pressure or the gas pressure power of different directions, increase the direction of transfer that steering handwheel passes to the power of steering gear and changes power, make vehicle change the device of travel direction, its roughly the transmission of power flow process be: bearing circle → steering box steering column → power steering → tierod → wheel (the structure difference according to steering box is slightly variant) and steering box under the prior art roughly is divided into following 3 kinds:
1. pinion and-rack hydraulic power-assisted steering;
2. electric power modulated pressure servo-steering;
3. electric boosting steering system (EPS).
Wherein the operation pressure of the power steer of fluid pressure type can be up to more than the 10MPa, and its part dimension is less, in addition, noiseless during hydraulic work system, work is short delay time, and can absorb the impact from uneven road surface.Therefore, hydraulic power steering device obtains widespread use on all kinds of automobiles at different levels.
And one of kernel component that whole rotary valve structure is the fluid-link steering machine directly influences driver's operation feel and Vehicular turn characteristic.And valve pocket is the critical component of rotary valve, directly influences the performance and the cost of rotary valve.
Existing valve pocket designs as shown in Figure 1, and it need adopt " scratching groove " processing technology mode to come the processing hydraulic runner, and production efficiency is low, and cost is higher, and condemnation factor is also higher.The valve pocket size of this type also is subject to processing the restriction of equipment in addition, and that can't do is less, has influenced its field of application to a certain extent.
As shown in Figure 2, the traditional control valve pocket under the prior art, because the restriction of processing technology at that time, its in-to-in hydraulic channel is designed to circular-arc.But this circular-arc design need be adopted the processing mode processing of special-purpose steering box valve pocket Fabricating machinery with " scratching groove ", and efficient is lower, thereby tooling cost is higher.Simultaneously, the job operation of " scratching groove " needs the tool motion space of big steering box valve pocket Fabricating machinery, thereby needs bigger valve pocket internal diameter.The overall dimensions of rotary valve will be bigger like this, some the time can't satisfy requirement on the spatial destribution to the rotary valve size.
Publication number CN200971109, the Chinese patent in open day on November 07th, 2007, the steering box spool of disclosed a kind of deep-slotted chip breaker comprises the spool indexing trough, at the bottom of the bottom land of its described spool indexing trough is a deep-slotted chip breaker.Curvature at the bottom of the deep-slotted chip breaker is 0.02～0.08mm.Flute length 18.0～the 28.0mm of spool indexing trough, groove width 4.0～6.5mm.The radial section of spool indexing trough is " Qian " shape, and middle groove width is greater than the two ends groove width.The spool indexing trough of this patent and the indexing trough straight line on the valve pocket match, improved the slit of liquid stream, thereby reduction noise, and the arc characteristic of the spool indexing trough of this patent, the possibility that adopts gear hobbing processing is provided, because the relative rolling movement between hobboing cutter and workpiece, its indexing accuracy improves greatly, can be controlled in 0.005 in addition.
Above-mentioned patent has adopted later-model gear hobbing method for processing, but the indexing trough of its key position still is a deep-slotted chip breaker, though precision improves greatly, it is low but still fundamentally not solve production efficiency, cost is higher, the valve pocket size is subject to processing the restriction of equipment, little this a series of problem of field of application.
In sum, in order to solve the variety of issue of the valve pocket under the prior art, now need a kind of new type hydraulic to turn to valve pocket, it should possess production efficiency and also can reduce production costs high the time, and can guarantee reduction oil groove extreme depth under the identical prerequisite of flow, reduce the size of valve pocket and valve packe, save installing space, improve field of application.
Summary of the invention
For the production efficiency that solves the steering box valve pocket under the prior art low, cost is higher, the valve pocket size is subject to processing the restriction of equipment, field of application is subjected to this a series of problem of space constraint, the invention provides a kind of valve pocket of hydraulic steering gear, by adopting the hydraulic pressure runner of straight trough shape, the hydraulic pressure runner of this straight trough shape can adopt the mode of extruding to process, and adopts interference fit and the mode of riveting tightly with an annulus hydraulic pressure groove to be blocked from end face again.Concrete structure of the present invention is as described below:
A kind of valve pocket of hydraulic steering gear comprises it is characterized in that the columned valve pocket body of intermediate throughholes:
Described valve pocket body interior is the ladder hole shape, and portion's wall is provided with the hydraulic channel groove within it;
The ladder end face of the right-hand member of described hydraulic channel groove is provided with a sealed circular ring.
According to a kind of valve pocket of hydraulic steering gear of the present invention, it is characterized in that described hydraulic channel groove is specially the hydraulic channel groove of straight trough shape.
The hydraulic channel groove of this straight trough shape adopts the mode of extruding to be processed to form one
The channel slot of shape, with the steering box valve pocket processing machine that must adopt special use under the prior art, and can only compare with the circular-arc hydraulic channel groove of " scratching groove " processes, enhance productivity greatly, and the hydraulic channel groove of this straight trough shape is because its valid circulation area is bigger than circular-arc hydraulic channel groove, so under the identical prerequisite of hydraulic fluid flow rate, can reduce the extreme depth of hydraulic channel groove, thereby reach the purpose that reduces the valve pocket external diameter.
According to a kind of valve pocket of hydraulic steering gear of the present invention, it is characterized in that, the external diameter of described sealed circular ring is slightly larger than the diameter of ladder end face, the internal diameter of sealed circular ring equals the internal diameter of whole valve pocket body, the sealing annulus is riveted tightly in the ladder end in the mode of interference fit, the hydraulic channel groove is blocked from the ladder end of right-hand member, form the straight trough shape the hydraulic channel groove.
One end of the hydraulic channel groove of straight trough shape forms with the mode of the interference fit sealed circular ring of riveting tightly
The structure of shape, change the circular-arc hydraulic channel groove structure under the prior art, reduced manufactured materials, reduced productive costs, and valve pocket internal diameter designed size will no longer be subjected to the restriction of oil groove process tool and equipment simultaneously, thereby can valve pocket internal diameter design-calculated is littler.Thereby reduce the external diameter of valve packe on the whole, thereby reach the purpose of further falling this and saving the deflector installing space.
According to a kind of valve pocket of hydraulic steering gear of the present invention, it is characterized in that, the hydraulic channel groove of described straight trough shape, the quantity of its channel slot is 6 or 8.
According to a kind of valve pocket of hydraulic steering gear of the present invention, it is characterized in that, the hydraulic channel groove of described straight trough shape at its 6 to also being provided with the connectivity slots that 3 or 4 connect valve pockets between the groove of 8 channel slots, this connectivity slot is the design of 360 ° of circumference uniform distribution formulas, and promptly every channel slot is 120 ° or 90 ° at interval.
Use valve pocket of hydraulic steering gear of the present invention, obtain following beneficial effect:
1. valve pocket of hydraulic steering gear of the present invention, the hydraulic channel groove of its straight trough shape adopt the mode of extruding to be processed to form
Shape and must adopt special-purpose steering box valve pocket processing machine under the prior art, and can only be with " scratching groove " processes
The circular-arc hydraulic channel groove of type is compared, and enhances productivity greatly;
2. valve pocket of hydraulic steering gear of the present invention, the hydraulic channel groove of its straight trough shape is because its valid circulation area is bigger than circular-arc hydraulic channel groove, so under the identical prerequisite of hydraulic fluid flow rate, can reduce the extreme depth of hydraulic channel groove, thereby reduced valve pocket inside/outside footpath, enlarged range of use;
3. valve pocket of hydraulic steering gear of the present invention, an end of the hydraulic channel groove of its straight trough shape form with the mode of the interference fit sealed circular ring of riveting tightly
The structure of shape has changed under the prior art
The circular-arc hydraulic channel groove structure of type has reduced by 10% ~ 15% manufactured materials, has reduced productive costs;
4. valve pocket of hydraulic steering gear of the present invention also can be provided with the connectivity slot that connects valve pocket between the groove of its channel slot, the design of this kind connectivity slot has realized the connection up and down of valve pocket, has effectively realized the oil return function.The hydraulic channel groove of connectivity slot, straight trough shape, the groove on the spool and control limit structure are formed the core texture of whole rotary valve jointly, have improved the hydraulic booster characteristic of steering box.
Description of drawings
Fig. 1 is the concrete structure scheme drawing of the steering box valve pocket of circular-arc hydraulic channel groove structure for the inside under the prior art;
Fig. 2 is the concrete structure enlarged drawing of circular-arc hydraulic channel groove of the steering box valve pocket of circular-arc hydraulic channel groove structure for the inside under the prior art;
Fig. 3 is a valve pocket of hydraulic steering gear concrete structure scheme drawing of the present invention;
Fig. 4 is the concrete structure enlarged drawing of hydraulic channel groove of the straight trough shape of valve pocket of hydraulic steering gear of the present invention;
Fig. 5 is the valve pocket of hydraulic steering gear concrete structure scheme drawing of the hydraulic channel groove that has 6 straight trough shapes of one of embodiment of valve pocket of hydraulic steering gear of the present invention;
Fig. 6 for the valve pocket of hydraulic steering gear A-A of the hydraulic channel groove that has 6 straight trough shapes of one of embodiment of valve pocket of hydraulic steering gear of the present invention to the concrete structure cutaway view;
Fig. 7 is the valve pocket of hydraulic steering gear concrete structure scheme drawing of two the hydraulic channel groove that has 8 straight trough shapes of the embodiment of valve pocket of hydraulic steering gear of the present invention;
Fig. 8 for the valve pocket of hydraulic steering gear B-B of two the hydraulic channel groove that has 8 straight trough shapes of the embodiment of valve pocket of hydraulic steering gear of the present invention to the concrete structure cutaway view;
Fig. 9 is the concrete structure scheme drawing of the valve pocket of hydraulic steering gear of three the hydraulic channel groove that has hydraulic channel that 3 connectivity slots form and 6 straight trough shapes of the embodiment of valve pocket of hydraulic steering gear of the present invention;
Figure 10 for the C-C of the valve pocket of hydraulic steering gear of three the hydraulic channel groove that has hydraulic channel that 3 connectivity slots form and 6 straight trough shapes of the embodiment of valve pocket of hydraulic steering gear of the present invention to the concrete structure cutaway view.
Among the figure: 1-valve pocket body, 2-hydraulic channel groove, 3-ladder end face, 4-sealed circular ring, 5-connectivity slot, the circular-arc hydraulic channel groove of 6-, 7-valve pocket body annular groove, 8-valve pocket oilhole.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment valve pocket of hydraulic steering gear of the present invention is described further:
At first make valve pocket of hydraulic steering gear of the present invention according to following method:
1. original blank material (or annealing after raw MAT'L) is processed into the valve pocket blank of cup-shaped that inwall has the hydraulic channel groove 2 of 6 or 8 straight trough shapes by the mode of pushing (cold-extruded or warm extrusion).
2. if necessary, eliminate the work hardening that extruding produces, to reach the mechanical characteristics that following process needs by heat treatment.
3. remove the bottom excess stock of the valve pocket blank of cup-shaped by turning, form the columned valve pocket body 1 of an intermediate throughholes, and make size satisfy the matching requirements between the valve pocket body and sealed circular ring 4 among Fig. 3 and Fig. 4.
4. the mode of sealed circular ring 4 with interference fit is pressed on the ladder end face 3 of valve pocket body 1 in-to-in hydraulic channel groove 2 right-hand members, and rivets tightly.
5. carry out follow-up necessary processing, until the finished product of finishing valve pocket of hydraulic steering gear of the present invention.
The mounting structure that the valve pocket body 1 and the sealed circular ring 4 of valve pocket of hydraulic steering gear of the present invention riveted tightly, with the quantity of the hydraulic channel groove 2 of straight trough shape and processing successively, promptly in this procedure processing still after process, can determine according to concrete operation needs.
As shown in Figure 5 and Figure 6, make the valve pocket body 1 that inwall has the hydraulic channel groove 2 of 6 straight trough shapes according to above-mentioned manufacture method, on the ladder end face 3 of the right-hand member of hydraulic channel groove with the mode of the interference fit sealed circular ring 4 of riveting tightly, the hydraulic channel groove of straight trough shape has replaced the circular-arc hydraulic channel groove under the prior art, the hydraulic channel groove of its straight trough shape adopts the mode of extruding to process, and enhances productivity greatly; The hydraulic channel groove of its straight trough shape is bigger than circular-arc hydraulic channel groove owing to its valid circulation area, thus under the identical prerequisite of hydraulic fluid flow rate, can reduce the extreme depth of hydraulic channel groove, thus reduced valve pocket inside/outside footpath, enlarged field of application; Also reduce manufactured materials in addition, reduced productive costs.
As shown in Figure 7 and Figure 8, make the valve pocket body 1 that inwall has the hydraulic channel groove 2 of 6 straight trough shapes according to above-mentioned manufacture method, the valve pocket of hydraulic steering gear structural similitude of the hydraulic channel groove of this structure and Fig. 5 and 6 straight trough shapes shown in Figure 6, the structure that adopts the sealed circular ring 4 and the ladder end face 3 of the right-hand member of the intrinsic hydraulic channel groove of valve pocket to rivet tightly and make up too, just the hydraulic channel groove increases to 8 by 6, this design can effectively improve hydraulic oil circulation area, improve the rotary valve flow, can also reduce noise; And its cost wants than cost a little increase is only arranged than 6 groove structures, and performance can significantly improve.
As Fig. 9 and shown in Figure 10, make the valve pocket body 1 that inwall has the hydraulic channel groove 2 of 6 straight trough shapes according to above-mentioned manufacture method, among this embodiment, still the structure that adopts the sealed circular ring 4 and the ladder end face 3 of the right-hand member of the intrinsic hydraulic channel groove of valve pocket to rivet tightly and make up, difference is, between the groove of hydraulic channel groove and groove, be provided with 3 connectivity slots 5 that connect the valve pocket bodies, this connectivity slot is 360 ° of circumference uniform distribution formula designs, 120 ° at interval of every connectivity slots, realize the connection up and down of valve pocket, effectively realized the oil return function of hydraulic oil.The hydraulic channel groove of connectivity slot, straight trough shape, the groove on the spool and control limit structure are formed the core texture of whole rotary valve jointly, have improved the hydraulic booster characteristic of steering box.
In conjunction with the foregoing description, valve pocket of hydraulic steering gear of the present invention, its principal feature is, by changing the structure of its valve pocket body 1 in-to-in hydraulic channel groove, with
The hydraulic channel groove 2 of shape straight channel type has replaced the circular-arc hydraulic channel groove 6 under the prior art, make it no longer need complicated special-purpose steering box valve pocket Fabricating machinery, and adopt fashion of extrusion just to can be made into, and valve pocket of hydraulic steering gear of the present invention on the ladder end face 3 of the right-hand member of hydraulic channel groove with the mode of the interference fit sealed circular ring 4 of riveting tightly, final formation
The structure of shape, maintaining under hydraulic fluid flow rate and the valid circulation area unmodified situation, changed the circular-arc hydraulic channel groove structure under the prior art, reduced manufactured materials, reduced productive costs, and the processing of the valve pocket oilhole 8 on hydraulic channel groove and the channel slot will no longer be subjected to the restriction of oil groove process tool and equipment, thereby can valve pocket inside/outside footpath design-calculated is littler.Thereby reduce the external diameter of valve packe on the whole, the purpose that reaches further cost-cutting and save the steering box installing space.
Valve pocket of hydraulic steering gear of the present invention can be applicable to the power-assisted of automobile or the accessory field of power operated steering hardware, has broad prospects.
Claims (5)
1. valve pocket of hydraulic steering gear comprises it is characterized in that the columned valve pocket body (1) of intermediate throughholes:
Described valve pocket body (1) inside is the ladder hole shape, and portion's wall is provided with hydraulic channel groove (2) within it;
The ladder end face (3) of the right-hand member of described hydraulic channel groove (2) is provided with a sealed circular ring (4).
2. a kind of valve pocket of hydraulic steering gear as claimed in claim 1 is characterized in that, described hydraulic channel groove (2) is specially the hydraulic channel groove of straight trough shape.
3. as claim 1 and 2 described a kind of valve pocket of hydraulic steering gear, it is characterized in that, the external diameter of described sealed circular ring (4) is slightly larger than the diameter of ladder end face (3), the internal diameter of sealed circular ring equals the internal diameter of whole valve pocket body (1), the sealing annulus is riveted tightly in the ladder end in the mode of interference fit, the hydraulic channel groove is blocked from the ladder end of right-hand member, formed the hydraulic channel groove of straight trough shape.
4. a kind of valve pocket of hydraulic steering gear as claimed in claim 2 is characterized in that, the hydraulic channel groove (2) of described straight trough shape, and the quantity of its channel slot is 6 or 8.
5. a kind of valve pocket of hydraulic steering gear as claimed in claim 4, it is characterized in that, the hydraulic channel groove (2) of described straight trough shape also can be provided with 3 or 4 connectivity slots (5) that connect valve pocket between the groove of its 6 or 8 channel slots, this connectivity slot is the design of 360 ° of circumference uniform distribution formulas, and promptly every channel slot is 120 ° or 90 ° at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101823A CN101746410A (en) | 2010-01-27 | 2010-01-27 | Valve pocket of hydraulic steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101823A CN101746410A (en) | 2010-01-27 | 2010-01-27 | Valve pocket of hydraulic steering gear |
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| Publication Number | Publication Date |
|---|---|
| CN101746410A true CN101746410A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010101823A Pending CN101746410A (en) | 2010-01-27 | 2010-01-27 | Valve pocket of hydraulic steering gear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092417A (en) * | 2010-12-06 | 2011-06-15 | 十堰合骏实业有限公司 | Integrated valve bush and powder metallurgy process method thereof |
-
2010
- 2010-01-27 CN CN201010101823A patent/CN101746410A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092417A (en) * | 2010-12-06 | 2011-06-15 | 十堰合骏实业有限公司 | Integrated valve bush and powder metallurgy process method thereof |
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Open date: 20100623 |